DISTRIBUTION in
North Carolina: Statewide, not obviously favoring one province
over another. It is found in all 100 counties.

ABUNDANCE in
North Carolina: Common to very common across the state; one of
the most often seen butterflies in NC, and a dozen or more
swallowtails can often be seen in a single day.

FLIGHT PERIOD in
North Carolina: Early March to early October (and exceptionally
to November). At least two broods, and possibly three; the broods
overlap, with no gaps. In the Coastal Plain and Piedmont, flight
periods are apparently early March to late May, and early June to
mid-September, with the "second" perhaps being composed of two
broods. Mountain flights generally are from mid-March to mid- or
late June, and late June into early October.